Hard drive & partitions should be working fine now! IF NOT keep reading. Harden security will stop mount Apple Filesystem Types and show error as: mount: unknown filesystem type 'hfsplus' or 'Master: hfsplus not configure in the kernel' BUT APFS must be written on the kernel configuration kmod-hfs, kmod-hfsplus will take while to installation cause it's adding new file-system types to the kernel, kernel first responsibility is HARDWARE, so if you suffer from this issue EVEN after installation of those packages above. That means either misconfiguration with kernel or HARDEN SECURITY been applied.

Actually the bit to download and install the elrepo-release package is missing from those instructions. It does the GPG key, then skips straight into installing packages from the repo that you have yet to install...

CentOS 5 died in March 2017 - migrate NOW!
Full time Geek, part time moderator. Use the FAQ Luke

Actually the bit to download and install the elrepo-release package is missing from those instructions. It does the GPG key, then skips straight into installing packages from the repo that you have yet to install...

Further note:
7.0-3.el7 and 6-8.el6 are transient version numbers. The packages do get updates.
I have no idea how long the old versions remain on site.
Therefore, future user: check the ELRepo site for current version number of elrepo-realease.rpm.